Prosecutors said Clack targeted mostly older homeowners, often offering to repave driveways at a bargain price with leftover materials and demanding a heftier fee after the work was done. They said this appears to be the first time Clack has been sentenced to prison in alleged paving scams that span several states.

Judge Paul A. Hackner also ordered $63,132 in restitution, though he and homeowners in the courtroom said they don't expect to see that money.

"I've got to say that I can't remember a case where I've seen such a pathological liar, such a shameless swindler, as you," Hackner told Clack, noting that he's been on the bench for 15 years.

The sentence comes on the heels of a Maryland attorney general's office finding that Clack preyed on consumers by charging far more than he said he would, and ordered Clack to pay nearly $500,000 in fines and restitution to Marylanders. It barred Clack from selling home improvement services unless he obtains a state license and posts a $50,000 bond.

Prosecutor Marot Hoskins said Clack received a suspended sentence in South Carolina, where he was ordered to pay more than $80,000 in restitution. They said he is wanted in South Carolina, North Carolina and Florida, and accused of defying court orders banning him from paving in North Carolina and South Carolina. He also has failed to appear for court in Baltimore, Queen Anne's and Prince George's counties, Hoskins said.

Clack, who had provided authorities with addresses in Myrtle Beach, S.C., and Annapolis, was extradited three times to Maryland during the Anne Arundel County cases, failing to appear in court at least once.

His victims, most from southern Anne Arundel, glowered at Clack as he told Hackner "they did give me permission" to pave their driveways. Clack apologized and said he has a family.

Several older people who attended the hearing later said they felt embarrassed or overpaid out of fear. Marot said one man had to take out a loan to pay Clack.

"I feel foolish," said Myron Kandra, 76, of Annapolis, who said he's owed about $4,000 in restitution, "because I gave in to this guy. I left my thinking cap off."